Method and composition to inhibit staining of porcelain surfaces

Details Method and composition to inhibit staining of porcelain surfaces Method and composition to inhibit staining of porcelain surfaces

1981-02-17

1983-02-22

Albrecht, Dennis L.

Fluid sprinkling, spraying, and diffusing

Slow diffusers

Gravity flow of liquid from supply holder

4227, 4228, 134 2, 134 3, 252 90, 252 95, 25217424, 252180, 422 28, 422 37, C02B 506, C11D 337, C11D 1704, E03D 902

Patent

active

043745725

ABSTRACT:
Method and composition to inhibit the staining of water-contacting surfaces, such as those in a toilet bowl, which is caused by manganese present in household water in the presence of an oxidizing material. Manganese staining is inhibited by supplying to the water 0.1 to 10 ppm of a substance selected from sodium polyacrylates and ethylenemaleic anhydride copolymers. Compositions are also described in the context of an automatic toilet tank dispenser which provides sufficient quantities of the above materials in solution to inhibit manganese staining of toilet bowl surfaces.

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